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Grepping a huge file (80GB) any way to speed it up?
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Here are a few options:
1) Prefix your grep command with LC_ALL=C to use the C locale instead of UTF-8.
2) Use fgrep because you're searching for a fixed string, not a regular expression.
3) Remove the -i option, if you don't need it.
So your command becomes:
LC_ALL=C fgrep -A 5 -...
If strings are immutable in .NET, then why does Substring take O(n) time?
...t tiny substrings from tiny strings, so how the complexity grows asymptotically is completely irrelevant.
The long answer is:
An immutable data structure built such that operations on an instance permit re-use of the memory of the original with only a small amount (typically O(1) or O(lg n)) of co...
Detail change after Git pull
...ction of the git-rev-parse man page), so that you can do things like
See all of the changes: git diff master@{1} master
See the changes to a given file: git diff master@{1} master <file>
See all the changes within a given directory: git diff master@{1} master <dir>
See the summary of c...
The most efficient way to implement an integer based power function pow(int, int)
...gt;= on a signed int does zero-padding or sign-extension - C compilers are allowed to pick either behaviour).
– user9876
Jul 28 '09 at 16:42
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How to use regex with find command?
.... For example 81397018-b84a-11e0-9d2a-001b77dc0bed.jpg. I want to find out all these images using "find" command:
7 Answers...
How to remove old Docker containers
...can use Docker container prune:
docker container prune
This will remove all stopped containers and should work on all platforms the same way.
There is also a Docker system prune:
docker system prune
which will clean up all unused containers, networks, images (both dangling and unreferenced), ...
PostgreSQL LIKE query performance variations
...ull Text Search with its full text indexes is not for the LIKE operator at all, it has its own operators and doesn't work for arbitrary strings. It operates on words based on dictionaries and stemming. It does support prefix matching for words, but not with the LIKE operator:
Get partial match fro...
How to launch html using Chrome at “--allow-file-access-from-files” mode?
...ome executable and then, on your cmd, try :
> "C:\PathTo\Chrome.exe" --allow-file-access-from-files
Source
EDIT :
As I see on your question, don't forget that Windows is a little bit similar to Unix, so when you type "chrome ...", cmd will search for Chrome in the PATH, but in general the Chr...
Looking for a good world map generation algorithm [closed]
... and modify your second idea. Once you generate your continents (which are all about the same size), get them to randomly move and rotate and collide and deform each other and drift apart from each other. (Note: this may not be the easiest thing ever to implement.)
Edit: Here's another way of doing...
How do I target only Internet Explorer 10 for certain situations like Internet Explorer-specific CSS
...ion < 10 to detect older versions of IE. IE10 and above works fine with all my CSS3, HTML5, jquery, etc.
– Dan Mantyla
Mar 12 '13 at 20:45
1
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